/Engine/Plugins/Developer/Concert/ConcertUI/ConcertSharedSlate/Source/ConcertSharedSlate/Public/Session/Browser/SConcertSessionBrowser.h
typedef TBaseDelegate_TwoParams< void, const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FConcertSessionTreeItem](API\Plugins\ConcertSharedSlate\Session\Browser\Items\FConcertSessionTreeItem) > &, [FExtender](API\Runtime\Slate\Framework\MultiBox\FExtender) & > FExtendSessionContextMenu